DigiKey now has posted prices (finally) for Mega164 and Mega324. (Stock isn't expected for another two months, but I've gotten samples.)
Let's take a peek at posted DigiKey prices in qty. 100, US$:
ATmega644P $4.51 (a couple of models)
As you can see, yet another anomaly in the AVR pricing structure (as Mega329 cheaper than Mega169).
We dropped a Mega644V into a Mega16L design without any problems, so I am not anticipating major upheaval when using Mega164 instead of a Mega16 or '8535.
Are there any gotchas that are not readily apparent? For example, do the smaller die sizes of the new generation that lead to better yields and better prices also mean less noise immunity?
On the surface, the new generation:
-- less expensive
-- "P" features
-- 20MHz max clock rate
-- twin USARTs, and USARTs as SPI masters
-- pin-change interrupts
-- "V" features (e.g. watchdog interrupt; low-power modes)
-- [vs. '8535] JTAG; ADC gain
These look like all advantages for the new generation. Are there any disavantages that I missed?